Pet playpen



FIG. 1 is a perspective view of a pet playpen with the door in an openposition;

FIG. 2 is another perspective view with the door closed;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a rear view of FIG. 2;

FIG. 5 is a left side view of FIG. 2, the right side being identical;

FIG. 6 is a top view of FIG. 2; and,

FIG. 7 is a bottom view of FIG. 2.

The broken lines are for purposes of illustration only and form no partof the claimed design.

The ornamental design for a pet playpen, as shown and described.